1N5345E3/TR8

Single Zener Diodes Overview

The Microchip Technology 1N5345E3/TR8 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 8.7 V with a ±5% tolerance, indicated by the 'B' suffix. The device operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. Electrical characteristics include a test current of 150 mA, a maximum dynamic impedance of 2.0 Ohms, and a maximum reverse leakage current of 10 µA. The component is RoHS compliant due to the 'e3' suffix and is supplied in tape and reel packaging as specified by the 'TR8' designation.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• Power supply reference voltage generation
• Overvoltage protection stages in electronic systems

Single Zener Diodes Procurement Notes

Verify the complete part number includes all suffixes: 'B' for 5% tolerance, 'e3' for RoHS compliance, and 'TR8' for tape and reel packaging. Confirm manufacturer origin, as this series was originally Microsemi and is now under Microchip Technology. Ensure the specific revision level matches design requirements, as datasheet revisions may occur. Check for any military screening prefixes if higher reliability standards are required.

Single Zener Diodes Selection Notes

Select this component when a precise 8.7 V regulation point is needed with a 5-watt thermal capacity. The ±5% tolerance suits general-purpose applications where tighter precision is unnecessary. Consider the T-18 package dimensions for PCB layout constraints. Evaluate thermal derating curves if ambient temperatures exceed standard limits or if heat sinking is not utilized.

Single Zener Diodes Part Context

This device belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. The 'e3' suffix indicates lead finish compliance with RoHS directives, replacing tin-lead terminations with annealed matte-tin plating. The 'TR8' suffix denotes the specific tape and reel packaging format used for automated assembly processes.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other 1N53xxB devices with different voltage ratings. For identical specifications, verify availability of 1N5345B variants. Surface mount equivalents such as SMBJ5345B or SMBG5345B may be considered if footprint changes are acceptable.